[bash_scripts] add automation scripts for direnv security with gpg

[jweeeezy]

Linux Setup

• add gpg

Script

• Argument Parsing [-p] [-l] [-e] [-d]

• -p FILE_PATH
  If not provided, defaults to '~'

• -led
  If None provided, defaults -l

• -l (LIST)
  lists all .envrc and/or encrypted files from given file_path

• -e (ENCRYPT)
  recursively encrpyts all .envrc files from given file_path

• -d (DECRYPT)
  recursively decrpyts all files that were encrypted by this script before from given file_path